From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Hand-drawn modification sketch showing two views of a mechanical part.
| Identifier | ExFiles\Box 94\1\ scan0223 | |
| Date | 31th October 1935 | |
| Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}9/KW.31.10.35. Reduced To 30° REDUCED TO 0.100 MODIFICATION TO NSCH 4668 31/10/35 | ||